* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: 'Segoe UI', sans-serif;
    background-color: #f4f4f4;
}

.page-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.tool-panel {
    background: linear-gradient(135deg, #e8eaf6, #f8bbd0);
    padding: 20px;
    border-bottom: 1px solid #ccc;
    overflow-y: auto;
}

.tool-panel h2 {
    margin-top: 15px;
    font-size: 1.1rem;
    color: #333;
}

.setting-group label {
    display: block;
    margin-top: 10px;
}

.setting-group input,
.setting-group select {
    margin-right: 10px;
    padding: 5px;
    width: 80px;
}

.queue-table, .history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.queue-table th, .queue-table td,
.history-table th, .history-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

.queue-table tr:nth-child(even), .history-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.tutorial-list li {
    list-style-type: none;
    margin-top: 8px;
}

.tutorial-list a {
    color: #0d47a1;
    text-decoration: none;
}

.workspace {
    flex: 1;
    position: relative;
    background-color: #222;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#renderCanvas {
    width: 100%;
    height: 100%;
    display: block;
}